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Telegram/lib_ui/ui/toast/toast_widget.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/toast/toast.h"
+#include "ui/text/text.h"
+#include "ui/rp_widget.h"
+#include "ui/round_rect.h"
+
+namespace Ui::Toast::internal {
+
+class Widget final : public RpWidget {
+public:
+	Widget(QWidget *parent, Config &&config);
+
+	// shownLevel=1 completely visible, shownLevel=0 completely invisible
+	void setShownLevel(float64 shownLevel);
+
+	void parentResized();
+
+private:
+	void paintEvent(QPaintEvent *e) override;
+
+	void updateGeometry();
+	void paintToProxy();
+	void disableChildrenPaintOnce();
+	void toggleChildrenPaint(bool enable);
+	void scheduleChildrenPaintRestore();
+
+	const not_null<const style::Toast*> _st;
+	RoundRect _roundRect;
+	RectPart _attach = RectPart::None;
+	rpl::variable<int> _addToAttach;
+
+	float64 _shownLevel = 0;
+	QImage _shownProxy;
+
+	object_ptr<RpWidget> _content;
+	rpl::variable<QMargins> _padding;
+	Fn<void(float64)> _updateShownGeometry;
+
+	bool _childrenPaintDisabled : 1 = false;
+	bool _childrenPaintRestoreScheduled : 1 = false;
+	bool _adaptive : 1 = false;
+
+};
+
+} // namespace Ui::Toast::internal